Open-ocean infestation by salmon lice (Lepeophtheirus salmonis): comparison of wild and escaped farmed Atlantic salmon (Salmo salar L.)

aetiology animal salvaje animal sauvage atlantic salmon caligus elongatus disease prevalence ectoparasites enfermedades de los peces etiologia etiologie fish diseases infestation lepeophtheirus salmonis maladie des poissons mar de noruega marine fishes marine invertebrates norwegian sea parasite parasites peces marinos poisson de mer saltwater fishes saumon atlantique wild animals